forked from Lainports/freebsd-ports
2daf87ac19
This is an initial attempt to add Samba to the FreeBSD after major
rewrite of the VFS code in the upstream.
Most of the port development is now carried in:
https://gitlab.com/samba-freebsd
Due to the way how new Samba VFS code is written there is a constrain
that Samba 4.14+ can run only on FreeBSD 13.1+, as it requires support
of the `nodup` option for the `fdesc` file system, as well as it's
presence in the system in general.
https://gitlab.com/samba-freebsd/-/wikis/The-New-VFS
I'd like to thank CyberSecure Pty Ltd. company for their supoort of
the port development and Andrew Walker from iXsystems Inc. for the
patches he created and made available for the Samba4 on TrueNAS.
PR: 263874
122 lines
3.2 KiB
Groff
122 lines
3.2 KiB
Groff
'\" t
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.\" Title: ping_pong
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.\" Author:
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.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
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.\" Date: 09/23/2020
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.\" Manual: CTDB - clustered TDB database
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.\" Source: ctdb
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.\" Language: English
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.\"
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.TH "PING_PONG" "1" "09/23/2020" "ctdb" "CTDB \- clustered TDB database"
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.\" -----------------------------------------------------------------
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.\" * Define some portability stuff
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.\" -----------------------------------------------------------------
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.\" http://bugs.debian.org/507673
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.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.ie \n(.g .ds Aq \(aq
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.el .ds Aq '
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.\" -----------------------------------------------------------------
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.\" * set default formatting
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.\" -----------------------------------------------------------------
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.\" disable hyphenation
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.nh
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.\" disable justification (adjust text to left margin only)
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.ad l
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.\" -----------------------------------------------------------------
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.\" * MAIN CONTENT STARTS HERE *
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.\" -----------------------------------------------------------------
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.SH "NAME"
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ping_pong \- measures the ping\-pong byte range lock latency
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.SH "SYNOPSIS"
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.HP \w'\fBping_pong\fR\ 'u
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\fBping_pong\fR {\-r | \-w | \-rw} [\-m] [\-c] {\fIFILENAME\fR} {\fINUM\-LOCKS\fR}
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.SH "DESCRIPTION"
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.PP
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ping_pong measures the byte range lock latency\&. It is especially useful on a cluster of nodes sharing a common lock manager as it will give some indication of the lock manager\*(Aqs performance under stress\&.
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.PP
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FILENAME is a file on shared storage to use for byte range locking tests\&.
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.PP
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NUM\-LOCKS is the number of byte range locks, so needs to be (strictly) greater than the number of nodes in the cluster\&.
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.SH "OPTIONS"
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.PP
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\-r
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.RS 4
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test read performance
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.RE
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.PP
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\-w
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.RS 4
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test write performance
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.RE
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.PP
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\-m
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.RS 4
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use mmap
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.RE
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.PP
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\-c
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.RS 4
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validate the locks
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.RE
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.SH "EXAMPLES"
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.PP
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Testing lock coherence
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.sp
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.if n \{\
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.RS 4
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.\}
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.nf
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ping_pong test\&.dat N
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.fi
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.if n \{\
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.RE
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.\}
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.PP
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Testing lock coherence with lock validation
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.sp
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.if n \{\
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.RS 4
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.\}
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.nf
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ping_pong \-c test\&.dat N
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.fi
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.if n \{\
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.RE
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.\}
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.PP
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Testing IO coherence
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.sp
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.if n \{\
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.RS 4
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.\}
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.nf
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ping_pong \-rw test\&.dat N
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.fi
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.if n \{\
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.RE
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.\}
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.SH "SEE ALSO"
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.PP
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\fBctdb\fR(7),
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\m[blue]\fB\%https://wiki.samba.org/index.php/Ping_pong\fR\m[]
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.SH "AUTHOR"
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.br
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.PP
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This documentation was written by Mathieu Parent
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.SH "COPYRIGHT"
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.br
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Copyright \(co 2002 Andrew Tridgell
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.br
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.PP
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This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version\&.
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.PP
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This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE\&. See the GNU General Public License for more details\&.
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.PP
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You should have received a copy of the GNU General Public License along with this program; if not, see
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\m[blue]\fB\%http://www.gnu.org/licenses\fR\m[]\&.
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.sp
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